Gate valve



Peb. 15, 1927.

1,617,503 J.' H. SEYMOUR ETAL GATE vApvE f Filed Aug. s, 192e 2 sheets-sheet 1 i gmt wat.

y attenua 2 sheets-sheet 2 v.

Feb. 1 1927.

5 J. H. SEYMOUR ET`^|` GATE' VALVE i Fiied Aug. s, 192s .gaf

4 7/ .O OUI aa mw. o w. 5 .......f Q in -1| a ..0 u o. o Ill o .7

Patented Feb. V15, 1927.

,UNITED STATES TPTENT Y i JULIUs H'. SEYMOUR -ANDTHQMAS s. SPEAR, OFBARTOWFLORIDAP.f

'earn vAnvE. f

faiipiicartin .iednugust 3,19%.' semaine. 126,394.' A

This invention relates to gate valves of thel character of that shown in our copend'- ing application VSerial Number 123,704, filed on the'20th day of July, 1926, wherein fa plate like valve is pivotedv to swing laterally across the bore of a conduit for the pur? pose of opening and. closing the same, said valve swinging betweentwo separablegsections of a valve casing.

In the application above referred to 'the valve was not enclosed, but upon the contrary swungl into the open. f

The device of the present invention em. bodies a structure wherein the valve plate'is housed, throughout its movement, saidl house ing and associate parts vbeing suitably Apacked to preventI leakage.. The invention further contemplates the provision ofV novel Y means for actuatingthevalve plate from nthe exterior offits protective housing. f

Like numerals designate corresponding parts in all of the figures of the drawing.

Referringto the drawingS-- Fig. 1 is a side elevation of a valve constructed in' accordance fwith the invention.

Fig. 2 is a vertical" sectional view therethrough.

Fig. 3 is a fragmentary end elevation of the valve.

Fig. 4 is a view of the operating lever for the form of the invention illustrated in Figs.

1, 2, k3 and 5.

Fig. 5 is a'view of the valve plate with one-half of the housing removed.

Fig. Gris a view of the valve plate with a part of the housing, illustrating a modified form of actuating means for the valve plate and f Fig. 7 is a vertical sectional view through the structure of Fig. 6.

The device ofthe invention comprises a two part casing consisting of the sections 5 and 6. The valve plate or web 7 is mounted to swing between the sections 5 and 6 and has an 'opening' 8, formed therethrough. When this opening is in lalignment with the bore of the conduit, the valve is open and fluid mayflowthrough the valve casing, while when the web 7 is in the position illustrated in Figs. 2 and 5, the valve is closed. The sections 5 and 6 carry oomplemental housing webs 9 and 10 which are fastened together at their-outer edges by bolts or screws 11, the confronting edges ofthe housings having a'strip ofpacking 12 between them. The valve casing sections 5 Yand '6"h`av`e" outer flanges lgand 14 ya'ndfinner, flanges 15and16, respectively. T he inner flanges are Vtraversed byk bolts 17 18, 19, 20, 21 Aand 22. yThese bolts tend to draw'the flanges 15and 16ftowardfeach i.

other and tobind packinglrin'gs'o gaskets 23y .and 24:intfofluid iight contact with the valve lplate or web '7 .f-"Bo-lts 1 7 andflS'pass through" an arcuate slot' 25 of ,the web while' (see Fig.v 4,) upon 1an; extension Blof the ,the bolts 21`a`nd 22y pass throughjarcuate `slot 426..;,Bolts 19 and 2,0 pass'througli cors` hub 32 of the valve plate.'Thishub'isvpro! videdvzith` a pivot .-.boltfor spindle33' 'and'V I i the housing:sectionsf) and 110 are provided withlrecesses 34 and'. 35 vfor the ireceptionof this pin. Screws or. boltlsfpass l.through U-shaped clamps 37;. whi'chfmay be ,drawn clamps, ;are caused to `compress, lpacking' toward theouter facesl of the housing see# strips y38 'and .39 linto fluid ,tight engagementJ l with the hub 32, to'therebypreventleakage outwardly past said hub and to that partof the housing in which the member 31 moves.

A modified form of operating means for the valveplate is illustrated in Figs. 6 and 7. lIn this case, the extension 31 and lever 30 are dispensed with and the top of the housing is completely sealed. Valve plate 7a is provided with an additional arcuate slot 40. The hub 32aisV provided with an arcuate row of teeth with which a pinion 42 meshes. This pinion is mounted upon the v shaft '43 of a hand whe-el 44. A suitable stuffing box 45'packs the. shaft/13'. It is manifest thatrotationof the hand `wheel will vcause the pinion 42 to act upon the teeth 41 to move the valve plate either to open or closed position according to the directionof rotation of the hand wheel.

When the valve is to be moved either to open or close the same, the bolts 19v and 2O are removed while the bolts 17,18 and 21, 22 are merely loosened. Then `set screws 46 and 47 'are tightened.'k Theseset screws go through one-half of the valve casing and bear againstthe otherhalf and their funcrenders its operation easier. It is true that sli htly separating' thetw'o sections of the va ve casingfmav result in a small amount of leakage but since it takes but a sli-ort time' to move the1valvegithis;leakage may beidisre- Y garded. As soonas the valve has been moved to the desired position the setscre'vvs`A are loosened, the bolts 17,18, 271 and 22 are I tightened and the bolts-19 and Q0`iare re# stored to, their ifrrner position' and, tightenedfsinzce these belts" traverse the' valve plate' vit*follows that after they-have once I beenut in place the valve can notbe ac'ci- IQed t v Wfpffably, though not. necessarily, includej'evbypaxsses 50` in vourstructure.v These bypasses leed from the HOusng toa the rvalve Y.Casin "and include 'valves 5T Ilfha length,-

Th flirllctjn is to equalize the" Pressure' be,- tween,v the wings" of the valve plate housing (i, e4, these Spec-esimo which @havane plate' moves) andthe interiorv of" the conduit of i which thevel've. Casinsfsectons- 5' andi G con# i Stitute apart. l 'Thisv facilitates movement ot i 25 the valve by', relieving 'unequal pressures. thereon. j c f 1 Y It isi togheA understood' that the invention is noti lmitedto the Precise Construction 'set' fortli-A but V that "it,A includes Within, its purview,

' elaine.` its:

vvha;)tevevrfA changesv airly'come Within eitlien the terms or the` spiriti of the appended Chips. Y s f v .Comprising a pair y of valve p casing lseetion's disposed face to face, packing gaskets upon their confronting faces, 4a web like valve plate having' arcuate slots formed" therein,`

movable between saidgaskets, bolts traversingV said slots dsawingth@ valve Casing sections together, bolts traversing the valve casing sections and the valve for holding the valve in adjusted positions and complemental 'va-Ive' housings-upon said sections into ,which the valve swings intits movement across the lvalve casing sections.

arcu'ategs'lots concentric with the pivot-oiy the valve plate, packing ymeans carried'by the valve casing sections, and Yengaging said valve, a shaft projecting to tlieeX'terior o'f the valve/housing V"sections at la point inwardly of the pivot ofthe v'alv'epplate, operatingn'vnieans" Yupon said shait,v means for packin'gysaid shaft Jtoprev-ent leakage, an arcuate y rack'aiongpthe edge ofoneof-s'aid arcuate slots and a pinionfcarriedjby the shaft and meshing With said rackA and packingmeans at the edgel of thev valve housing sections outwardlyof vthe valve.A V'i In testimony 'vv-hereof; We aflixV our usignaturesf' Y f JULIE-s Hl. SEYMOUR.- n Y vfrnoiun'sfs.l sPEA-a 

